A controlled comparison of HIV and general medical referrals to a liaison psychiatry service

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Abstract
A retrospective case-control study was performed to compare the patterns of psychiatric illness and treatment in 70 patients referred to the psychiatric liaison service from the HIV/AIDS team in a London teaching hospital with 70 age- and sex-matched controls referred for psychiatric assessment from general medical and surgical wards or out-patient clinics. Organic, mood, adjustment and personality disorders were the most common primary diagnoses. The rate of referral in the HIV group was five times that in the control group. The prevalence of each group of diagnoses was not significantly different between the HIV and control groups, except in the case of alcohol dependence (15/70 (control) v. 3/70 (HIV), p = 0.005). Forty-four per cent of the HIV group and 30% of the control group fulfilled DSM-III-R criteria for a secondary diagnosis of non-alcohol psychoactive substance abuse. A diagnosis of borderline personality disorder was made more often in the HIV group. The high frequency of psychoactive substance abuse in both the HIV and control groups has important implications for the provision of psychiatric services.